Your API ranks on Google. But does it rank for AI agents?

Short summary

APIs visible on Google often remain invisible to AI agents due to different discovery mechanisms. The author implemented a three-layer solution: SERP signals via Schema.org JSON-LD for Google, agent-native discovery files (agent.json, llm.txt) in /.well-known/, and direct access via MCP/REST/OpenAPI. Implementation details: robots.txt content signals (ai-input=yes) and pricing schema with UnitPriceSpecification for proper subscription display.

• •AI agents discover APIs via different signals than human search—requiring dedicated metadata files (agent.json, llm.txt) and agent-specific discovery files in /.well-known/
• •Three independent layers needed: SERP signals for Google/Bing, agent-native discovery (agent.json, llm.txt, /.well-known/mcp.json), and live access (MCP, REST, OpenAPI)
• •Implementation critical: Schema.org JSON-LD with UnitPriceSpecification for subscriptions, robots.txt content signals (ai-input=yes, search=yes), and Allow rules for GPTBot, ClaudeBot

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